New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1000 - SUBDIVISIONS; INDIVIDUAL SEWAGE DISPOSAL SYSTEMS
Part Env-Wq 1016 - CONSTRUCTION REQUIREMENTS FOR ALL EDA
Section Env-Wq 1016.01 - Bed Size for Conventional Stone and Pipe Systems

Universal Citation: NH Admin Rules Env-Wq 1016.01
Current through Register No. 13, March 27, 2025

The bed size for conventional stone and pipe systems shall be determined by the number of bedrooms, percolation rates, and total sewage flow per day as set forth in Table 1016-1 below:

Table 1016-1: Bed Size for Conventional Stone and Pipe Systems

In Square Feet for Varying Loads And Percolation Rates

Percolation Rate in Minutes Per Inch

Single-Family and Duplex - Number of Bedrooms Up to 10

Commercial

2

(300 GPD)

3

(450 GPD)

4

(600 GPD)

Each Add'l Bedroom (+150 GPD)

Per 100 GPD

2

400

560

750

188

125

4

425

617

825

210

140

6

450

675

900

233

155

8

500

750

1000

255

170

10

550

825

1100

278

185

12

600

900

1200

300

200

14

637

955

1275

319

213

16

675

1010

1350

338

225

18

712

1065

1425

357

237

20

750

1120

1500

375

250

22

775

1158

1550

387

258

24

800

1196

1600

400

266

26

825

1234

1650

412

274

28

850

1272

1700

425

282

30

875

1310

1750

437

290

32

900

1348

1800

449

298

34

925

1386

1850

462

306

36

950

1424

1900

475

314

38

975

1462

1950

488

322

40

1000

1500

2000

500

330

42

1050

1575

2100

525

347

44

1100

1650

2200

550

364

46

1150

1725

2300

575

381

48

1200

1800

2400

600

398

50

1250

1875

2500

625

415

52

1300

1950

2600

650

432

54

1350

2025

2700

675

449

56

1400

2100

2800

700

466

58

1450

2175

2900

725

483

60

1500

2250

3000

750

500

(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08

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